Cerus (CERS) legal chief logs stock grant and Rule 10b5-1 sale

Rhea-AI Filing Summary

Cerus Corp Chief Legal Officer Chrystal Jensen reported two stock transactions. On March 5, 2026, Jensen acquired 55,220 shares of common stock as a grant or award at $0.00 per share, bringing direct holdings to 1,083,514 shares. On March 6, 2026, Jensen sold 30,845 shares of common stock at a weighted average price of $2.0055 per share, leaving 1,059,139 shares directly owned. The sale was executed under a Rule 10b5-1 instruction to cover statutory tax withholding and brokerage fees related to vesting restricted stock units and was not a discretionary sale.

Insider Trade Summary

Net Seller: 30,845 shares ($61,860)

Net Sell 2 txns

Insider Jensen Chrystal

Role Chief Legal Officer

Sold 30,845 shs ($62K)

Type	Security	Shares	Price	Value
Sale	Common Stock	30,845	$2.0055	$62K
Grant/Award	Common Stock	55,220	$0.00	--

Holdings After Transaction: Common Stock — 1,059,139 shares (Direct)

Footnotes (1)

1. Represents shares sold pursuant to an instruction intended to comply with the requirement of Rule 10b5-1 that was elected by the Reporting Person on the date of grant to cover statutory tax withholding obligations and corresponding brokerage fees in connection with the vesting of certain restricted stock units and does not represent a discretionary sale by the reporting person. Represents a weighted average sales price. These shares were sold in a block trade per share, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold pursuant to such block trade.

Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

X

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Jensen Chrystal

(Last) (First) (Middle)

C/O CERUS CORPORATION

1220 CONCORD AVE SUITE 600

(Street)

CONCORD CA 94520

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
CERUS CORP [ CERS ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Legal Officer

3. Date of Earliest Transaction (Month/Day/Year)
03/05/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	03/05/2026		A		55,220	A	$0.00	1,083,514	D
Common Stock	03/06/2026		S(1)		30,845	D	$2.0055(2)	1,059,139	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Represents shares sold pursuant to an instruction intended to comply with the requirement of Rule 10b5-1 that was elected by the Reporting Person on the date of grant to cover statutory tax withholding obligations and corresponding brokerage fees in connection with the vesting of certain restricted stock units and does not represent a discretionary sale by the reporting person.

2. Represents a weighted average sales price. These shares were sold in a block trade per share, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold pursuant to such block trade.

	Chrystal N. Jensen, attorney-in-fact	03/09/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What insider transactions did Cerus (CERS) report for Chrystal Jensen?

Cerus reported that Chief Legal Officer Chrystal Jensen received a grant of 55,220 common shares and then sold 30,845 shares. The sale was made under a Rule 10b5-1 plan to cover tax withholding tied to vesting restricted stock units.

How many Cerus (CERS) shares did Chrystal Jensen sell and at what price?

Chrystal Jensen sold 30,845 shares of Cerus common stock at a weighted average price of $2.0055 per share. The transaction was executed as a block trade under a Rule 10b5-1 instruction to satisfy tax withholding and related brokerage fees.

Was the Cerus (CERS) insider sale by Chrystal Jensen discretionary?

The sale was not discretionary. Footnotes state the 30,845 shares were sold pursuant to a Rule 10b5-1 instruction elected on the grant date, solely to cover statutory tax withholding and brokerage fees related to vesting restricted stock units.

How many Cerus (CERS) shares does Chrystal Jensen own after these transactions?

After the March 6, 2026 sale, Chrystal Jensen directly owns 1,059,139 shares of Cerus common stock. This figure reflects holdings following the 55,220-share grant on March 5, 2026 and the subsequent 30,845-share sale.

What type of equity award did Cerus (CERS) grant to Chrystal Jensen?

Cerus granted Chrystal Jensen 55,220 shares of common stock as a grant or award on March 5, 2026 at $0.00 per share. This transaction increased her direct holdings to 1,083,514 shares immediately following the award.